Gernego, Iuliia, Liudmyla Petrenko, Mykhailo Dyba, and Serhii Onikienko. “Regional Environmental Systems As a Driver of Innovative Economy in Ukraine”. European Journal of Sustainable Development 10, no. 2 (June 1, 2021): 33. Accessed October 16, 2021. http://ojs.ecsdev.org/index.php/ejsd/article/view/1208.